how to make a heatmap for a monthly time serie?

7 次查看（过去 30 天）
Rt Ro
Rt Ro 2019-12-3
评论： Rt Ro 2019-12-3
I have a monthly time series from jan1971 to dec 1986.
I want to make a heatmap to show the value of each month in each region.
whaen I use the heatmap structure, I should write the name of x-values. but they are192 and I can not write all of them.
xvalues = {'Jan-1971', Feb1971',..., 'Dec 1986'};
yvalues = {'A','B','C','D''};
h = heatmap(xvalues1,yvalues1,cdata1);
could you please let me know the best way to show the xvalues?
could you make the heatmap with the attached data?

请先登录，再回答此问题。

采纳的回答

Kostas
Kostas 2019-12-3
Based on the heatmap documentation
tbl = readtable('heatmap.test.xlsx');
months = categorical(tbl.Var2);
years = categorical(tbl.Var1);
xlabels = categories(months);
ylabels = categories(years);
nummonths = numel(xlabels);
numyears = numel(ylabels);
x = double(months);
y = double(years);
A = tbl.A;
cdata = accumarray([y,x],A,[numyears,nummonths],@mean,NaN);
h = heatmap(xlabels,ylabels,cdata);
  6 个评论
显示 4更早的评论
Kostas
Kostas 2019-12-3
Unfortunately i do not know how/if this can be done in heatmap. One solution could be to save the image in vector format and then change the labels you want using an image proseccing software.
Something else you could do so as to seem nicer, it would be to make a heatmap for each month seperately.
For example to get just for January you could change the "xDisplayData" as follow
xDisplay = h.xDisplayData;
Jan = xDisplayData(1:12:end);
h.xDisplayData = Jan;
And you can do the same for the rest of the months
% February
Feb = xDisplayData(2:12:end);
h.xDisplayData = Feb;
Rt Ro
Rt Ro 2019-12-3
Thank you so much.
another person helped me with this code:
idx = month(t)==1; % index of datetime values to show as x tick
h.XDisplayLabels(~idx) = {''}; % replace rejected tick labels with empties
it works well:)

请先登录，再进行评论。

更多回答（1 个）

Sean de Wolski
Sean de Wolski 2019-12-3
Convert your x values to datetime. Then heatmap will just work:
dt = datetime('now'):hours(1):datetime('tomorrow');
v = rand(10,numel(dt));
heatmap(dt, 1:size(v,1), v)
  5 个评论
显示 3更早的评论
Sean de Wolski
Sean de Wolski 2019-12-3
Do you want to bin by month? instead of by hours or days?
Rt Ro
Rt Ro 2019-12-3
Yes I want to show it by month. I could do it. Now, there are a lot of xdisplay labels (192) and I am trying to show each two year on the x axis not each month. Do you have any idea?

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 Data Distribution Plots 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by